new style fillers are 10mm flexi pipe and the old ones were 8mm solid copper filler pipe, if you have the larger filler type then you will need to use the 10mm rubber flexi tube and that can only be used with the new style fillers which are a fast flow quick fill effort, i will have a look in the shed see i f i have a few 10mm flexi filler pipes, i f i have then you can glady have one as i got them for bugger all when the lpg company folded i worked for.